FVXX21 KWBC 172100
VOLCANIC ASH ADVISORY STATEMENT
ISSUED 2100 UTC 17 FEB 2000 BY THE WASHINGTON VAAC
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TUNGURAHUA 00-204 ECUADOR 0128S 7826W
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BACKGROUND: TUNGURAHUA ECUADOR (1502-08)
SUMMIT HEIGHT 16480 FT (5023 M)
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SOURCES OF INFORMATION: THE GEOPHYSICAL INSTITUTE IN QUITO. 18/0000
UTC AVIATION MODEL WINDS.
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ERUPTION DETAILS: PERIODIC ASH AND STEAM EMISSIONS.
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DETAILS OF ASH: NO GOES-8 IMAGERY DUE TO RAPID SCAN OPERATIONS. NO
POLAR PASSES OVER ECUADOR SINCE LAST NIGHT. THE GEOPHYSICAL INSTITUTE
REPORTS THAT NO MAJOR ERUPTIONS HAVE OCCURRED AT TUNGURAHUA YET THERE
HAVE BEEN SOME SMALL EXPLOSIONS TODAY. TUNGURAHUA REMAINS IN A VERY
ACTIVE STATE AND COULD ERUPT AT ANYTIME. ROUTINE GOES-8 IMAGERY WILL
RESUME AT 17/2326 UTC.
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TRAJECTORY: UPPER AIR PATTERNS SUGGEST ANY ASH UP TO FL200 WOULD MOVE
SOUTHWEST AT 5 TO 10 KNOTS. ASH BETWEEN FL200 AND FL300 WOULD MOVE
WEST AT 10 TO 15 KNOTS.
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OUTLOOK: SEE SIGMETS AND VAFTAD.
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THE NEXT STATEMENT WILL BE ISSUED BY 18/0300 UTC.
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REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH
ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION
ARE AVAILABLE AT INTERNET URL ADDRESS
http://www.ssd.noaa.gov/VAAC/washington.html
(all lower case except /VAAC/)
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PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS.
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HUGHES
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